{ "types" : { "Bookmark" : { "pluralLabel" : "Bookmarks" }, "Publication" : { "pluralLabel" : "Publications" }, "GoldStandardPublication" : { "pluralLabel" : "GoldStandardPublications" }, "GoldStandardBookmark" : { "pluralLabel" : "GoldStandardBookmarks" }, "Tag" : { "pluralLabel" : "Tags" }, "User" : { "pluralLabel" : "Users" }, "Group" : { "pluralLabel" : "Groups" }, "Sphere" : { "pluralLabel" : "Spheres" } }, "properties" : { "count" : { "valueType" : "number" }, "date" : { "valueType" : "date" }, "changeDate" : { "valueType" : "date" }, "url" : { "valueType" : "url" }, "id" : { "valueType" : "url" }, "tags" : { "valueType" : "item" }, "user" : { "valueType" : "item" } }, "items" : [ { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/221d0669d9a2931a78ac40c812af10db0/tcunis", "tags" : [ "Flapping","air","flight,micro","image","myown","tunnel","vehicles,particle","velocimetry,wind","wing,control,flapping" ], "intraHash" : "21d0669d9a2931a78ac40c812af10db0", "interHash" : "f116f65f30856dcab93e9d88e3e16296", "label" : "Accurate position control of a flapping-wing robot enabling free-flight flow visualisation in a wind tunnel", "user" : "tcunis", "description" : "", "date" : "2023-01-10 09:19:16", "changeDate" : "2023-01-10 08:27:37", "count" : 1, "pub-type": "inproceedings", "booktitle": "International Journal of Micro Air Vehicles", "year": "2019", "url": "", "author": [ "M. Karásek","M. Percin","T. Cunis","B.W. van Oudheusden","C. De Wagter","B.D.W. Remes","G.C.H.E. de Croon" ], "authors": [ {"first" : "M.", "last" : "Karásek"}, {"first" : "M.", "last" : "Percin"}, {"first" : "T.", "last" : "Cunis"}, {"first" : "B.W.", "last" : "van Oudheusden"}, {"first" : "C.", "last" : "De Wagter"}, {"first" : "B.D.W.", "last" : "Remes"}, {"first" : "G.C.H.E.", "last" : "de Croon"} ], "volume": "11","abstract": "© The Author(s) 2019. Flow visualisations are essential to better understand the unsteady aerodynamics of flapping wing flight. The issues inherent to animal experiments, such as poor controllability and unnatural flapping when tethered, can be avoided by using robotic flyers that promise for a more systematic and repeatable methodology. Here, we present a new flapping-wing micro air vehicle (FWMAV)-specific control approach that, by employing an external motion tracking system, achieved autonomous wind tunnel flight with a maximum root-mean-square position error of 28 mm at low speeds (0.8\u20131.2 m/s) and 75 mm at high speeds (2\u20132.4 m/s). This allowed the first free-flight flow visualisation experiments to be conducted with an FWMAV. Time-resolved stereoscopic particle image velocimetry was used to reconstruct the three-dimensional flow patterns of the FWMAV wake. A good qualitative match was found in comparison to a tethered configuration at similar conditions, suggesting that the obtained free-flight measurements are reliable and meaningful.", "issn" : "17568307", "doi" : "10.1177/1756829319833683", "bibtexKey": "Karasek2019ijmav" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2d133a44925d5d54ebe402eece22c9853/itke", "tags" : [ "2011","architecture","biomimetic","flapping","flectofin","from:petraheim","hingeless","itke","knippers","lienhard","masselter","mechanism","milwich","nature","peer-reviewed","poppinga","schleicher","speck","sunshade" ], "intraHash" : "d133a44925d5d54ebe402eece22c9853", "interHash" : "74ebb5f4d2e39a0948a7e9f1b62c3acd", "label" : "Flectofin: a hingeless flapping mechanism inspired by nature", "user" : "itke", "description" : "", "date" : "2020-05-22 14:26:48", "changeDate" : "2020-06-29 15:03:57", "count" : 2, "pub-type": "article", "journal": "Bioinspiration & Biomimetics", "year": "2011", "url": "", "author": [ "Julian Lienhard","Simon Schleicher","Simon Poppinga","Tom Masselter","Markus Milwich","Thomas Speck","Jan Knippers" ], "authors": [ {"first" : "Julian", "last" : "Lienhard"}, {"first" : "Simon", "last" : "Schleicher"}, {"first" : "Simon", "last" : "Poppinga"}, {"first" : "Tom", "last" : "Masselter"}, {"first" : "Markus", "last" : "Milwich"}, {"first" : "Thomas", "last" : "Speck"}, {"first" : "Jan", "last" : "Knippers"} ], "volume": "Vol. 6","abstract": "This paper presents a novel biomimetic approach to the kinematics of deployable systems for architectural purposes. Elastic deformation of the entire structure replaces the need for local hinges. This change becomes possible by using fibre-reinforced polymers (FRP) such as glass fibre reinforced polymer (GFRP) that can combine high tensile strength with low bending stiffness, thus offering a large range of calibrated elastic deformations. The employment of elasticity within a structure facilitates not only the generation of complex geometries, but also takes the design space a step further by creating elastic kinetic structures, here referred to as pliable structures. In this paper, the authors give an insight into the abstraction strategies used to derive elastic kinetics from plants, which show a clear interrelation of form, actuation and kinematics. Thereby, the focus will be on form-finding and simulation methods which have been adopted to generate a biomimetic principle which is patented under the name Flectofin®. This bio inspired hingeless flapping device is inspired by the valvular pollination mechanism that was derived and abstracted from the kinematics found in the Bird-Of-Paradise flower (Strelitzia reginae, Strelitziaceae).", "issn" : "1748-3182", "language" : "eng", "bibtexKey": "lienhard2011flectofin" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2d133a44925d5d54ebe402eece22c9853/petraheim", "tags" : [ "2011","architecture","biomimetic","flapping","flectofin","hingeless","itke","knippers","lienhard","masselter","mechanism","milwich","nature","peer-reviewed","poppinga","schleicher","speck","sunshade" ], "intraHash" : "d133a44925d5d54ebe402eece22c9853", "interHash" : "74ebb5f4d2e39a0948a7e9f1b62c3acd", "label" : "Flectofin: a hingeless flapping mechanism inspired by nature", "user" : "petraheim", "description" : "", "date" : "2020-05-13 11:04:17", "changeDate" : "2020-06-29 15:04:16", "count" : 2, "pub-type": "article", "journal": "Bioinspiration & Biomimetics", "year": "2011", "url": "", "author": [ "Julian Lienhard","Simon Schleicher","Simon Poppinga","Tom Masselter","Markus Milwich","Thomas Speck","Jan Knippers" ], "authors": [ {"first" : "Julian", "last" : "Lienhard"}, {"first" : "Simon", "last" : "Schleicher"}, {"first" : "Simon", "last" : "Poppinga"}, {"first" : "Tom", "last" : "Masselter"}, {"first" : "Markus", "last" : "Milwich"}, {"first" : "Thomas", "last" : "Speck"}, {"first" : "Jan", "last" : "Knippers"} ], "volume": "Vol. 6","abstract": "This paper presents a novel biomimetic approach to the kinematics of deployable systems for architectural purposes. Elastic deformation of the entire structure replaces the need for local hinges. This change becomes possible by using fibre-reinforced polymers (FRP) such as glass fibre reinforced polymer (GFRP) that can combine high tensile strength with low bending stiffness, thus offering a large range of calibrated elastic deformations. The employment of elasticity within a structure facilitates not only the generation of complex geometries, but also takes the design space a step further by creating elastic kinetic structures, here referred to as pliable structures. In this paper, the authors give an insight into the abstraction strategies used to derive elastic kinetics from plants, which show a clear interrelation of form, actuation and kinematics. Thereby, the focus will be on form-finding and simulation methods which have been adopted to generate a biomimetic principle which is patented under the name Flectofin®. This bio inspired hingeless flapping device is inspired by the valvular pollination mechanism that was derived and abstracted from the kinematics found in the Bird-Of-Paradise flower (Strelitzia reginae, Strelitziaceae).", "issn" : "1748-3182", "language" : "eng", "bibtexKey": "lienhard2011flectofin" } ] }